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Sequoia680 Chesapeake Dnvc Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 404 N W-s,l Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-2033/960227S2 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9602J14 -01 Reported Mar 14, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 2,4-Dinitro- Pentachloro- Pyrene <br /> toluene phenol <br /> OC Batch#' MS0228968270EXA MS0228968270EXA MS0228968270EXA <br /> Analy Method EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method EPA 3510 EPA 3510 EPA 3510 <br /> Analyst. B Pitamah B Pitamah B Pitamah <br /> MS/MSD # 96021-164-01 96021-164-01 96021-164-01 <br /> Sample Conc ND ND ND <br /> Prepared Date 2/28/96 2/28/96 2/28/96 <br /> Analyzed Date 2/29/96 2/29/96 2/29/96 <br /> Instrument I D # GCHP5 GCHP5 GCHP5 <br /> Cone Spiked 200 ug/L 200 ug/L 200 ug/L <br /> Result 170 180 170 <br /> MS % Recovery 85 90 85 <br /> Dup Result 170 180 160 <br /> MSD % Recov 85 90 so <br /> RPD 00 00 61 <br /> RPD Limit 0-50 0.50 0-50 <br /> LCS# WBO22896BS WBO22896BS WB022896BS <br /> Prepared Date 2/28/96 2/28/96 2/28/96 <br /> Analyzed Date 2/29/96 2/29/96 2/29/96 <br /> Instrument I D # GCHP5 GCHP5 GCHP5 <br /> Cone Spiked- 200 ug/L 200 ug/L 200 ug/L <br /> LCS Result 170 180 160 <br /> LCS % Recov 85 90 80 <br /> LCS 40-130 30-110 55-115 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br />.ZSIA NALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> enner **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative% Difference <br /> Manager Page 3 of 3 <br />